BMW M5 Forum

Post Reply
 
Thread Tools Search this Thread
      Today, 09:36 AM   #9769
Efthreeoh
General
United_States
19410
Rep
19,826
Posts

Drives: The E90 + Z4 Coupe & Z3 R'ster
Join Date: May 2012
Location: Virginia

iTrader: (0)

Hydrogen Achillies Heel is vaporization during on-board storage. It's not a solvable problem. It is just physics. Hydrogen is great for rockets, personal automobiles not so much.
Appreciate 0
      Today, 09:49 AM   #9770
medphysdave
Major General
medphysdave's Avatar
United_States
4911
Rep
5,041
Posts

Drives: M2 CS | 85 of 592
Join Date: Apr 2015
Location: Charlotte, NC

iTrader: (3)

Quote:
Originally Posted by Efthreeoh View Post
Hydrogen Achillies Heel is vaporization during on-board storage. It's not a solvable problem. It is just physics. Hydrogen is great for rockets, personal automobiles not so much.
Not solvable seems pessimistic Would it be feasible if there was a pump that could keep the tank pressurized to offset the lost volume. Or a tank that could change volume as hydrogen depleted. Not saying it's possible, just thinking outside the box.
Appreciate 0
      Today, 10:34 AM   #9771
pbonsalb
Lieutenant General
5832
Rep
11,371
Posts

Drives: 18 F90 M5, 99 E36 M3 Turbo
Join Date: Feb 2011
Location: New England

iTrader: (4)

Tank heater would increase pressure. Had a heater for my nitrous bottle long ago.
Appreciate 0
      Today, 12:16 PM   #9772
Efthreeoh
General
United_States
19410
Rep
19,826
Posts

Drives: The E90 + Z4 Coupe & Z3 R'ster
Join Date: May 2012
Location: Virginia

iTrader: (0)

Quote:
Originally Posted by medphysdave View Post
Not solvable seems pessimistic Would it be feasible if there was a pump that could keep the tank pressurized to offset the lost volume. Or a tank that could change volume as hydrogen depleted. Not saying it's possible, just thinking outside the box.
Liquid hydrogen is stored at -200 to -260 deg. C at reasonable pressures to remain portable. It boils off because like any cooler, the tank eventually absorbs heat. The box is affordability tied to the realism of safety...
__________________
A manual transmission can be set to "comfort", "sport", and "track" modes simply by the technique and speed at which you shift it; it doesn't need "modes", modes are for manumatics that try to behave like a real 3-pedal manual transmission. If you can money-shift it, it's a manual transmission. "Yeah, but NO ONE puts an automatic trans shift knob on a manual transmission."
Appreciate 1
      Today, 02:32 PM   #9773
dfox
Captain
1384
Rep
648
Posts

Drives: E88 135i 6MT
Join Date: Jun 2023
Location: North of Seattle

iTrader: (0)

Quote:
Originally Posted by medphysdave View Post
Id rather instantly explode to death than burn to death. It's a great point though. Can't wait until 3rd parties are trying to save a buck and cars start exploding. As if worrying about other drivers wasn't already bad enough I suspect you can make them quite safe since they can be packaged very small. I don't see how we are suddenly going to have hydrogen fuel cell infrastructure. This seems like something that dealerships would have to initially support.
I mean, maybe, but in an ICE or an EV, the fire isn't usually so instantaneous that you can't just get out of the car. An explosion sure is though.

Hydrogen refueling is pretty complicated, and the stations are pretty expensive. It's not just as simple as taking gas stations and making them hydrogen powered. And they'd likely not be self-service because of the safety concerns of compressed highly flammable gases.

Oh and that's all discounting the fact that hydrogen takes about 3x as much energy as filling up a battery. Everyone concerned that our electricity grid can't handle filling up BEV's... just wait till we have to triple that demand to create hydrogen...
Appreciate 0
      Today, 03:25 PM   #9774
M5Rick
General
M5Rick's Avatar
70575
Rep
22,547
Posts

Drives: M5 F10 DCT Gunmetal
Join Date: Aug 2018
Location: GB

iTrader: (0)

Im sticking to basics and so much easier to go with a gas car than an EV, could end up bad with EV charge rage in apartment parking, yep it's M GUY spelling it out again.
Appreciate 0
      Today, 04:01 PM   #9775
dfox
Captain
1384
Rep
648
Posts

Drives: E88 135i 6MT
Join Date: Jun 2023
Location: North of Seattle

iTrader: (0)

Quote:
Originally Posted by M5Rick View Post
Im sticking to basics and so much easier to go with a gas car than an EV, could end up bad with EV charge rage in apartment parking, yep it's M GUY spelling it out again.
It's pretty basic, and repetitious, isn't it? Amazing that there's still people who continue to watch different people say the same thing over and over again... Confirmation bias wins again.

That said, I'd never go EV if I lived in an apartment. But in the house I live, it's incredibly convenient. Pull in and once a week plug in, charge while sleeping. Never have to think about stopping for gas on my drives. For a daily commuter, it's quite the luxury experience.

For my other cars - nah, ev sucks. I'll keep my six speed bimmer for jollies and my mountain/road trip suv as ICE.
Appreciate 1
      Today, 05:03 PM   #9776
M5Rick
General
M5Rick's Avatar
70575
Rep
22,547
Posts

Drives: M5 F10 DCT Gunmetal
Join Date: Aug 2018
Location: GB

iTrader: (0)

^ Even so, it's important to being shown again (thought it looked familiar) so that EV buyers in apartments don't fall into the same trap as Miguel Frolich did. The bottom line here is to never rush into anything particularly when buying an EV before doing the homework..
Appreciate 0
      Today, 05:19 PM   #9777
dreamingat30fps
Colonel
United_States
5992
Rep
2,037
Posts

Drives: Miata, Cayenne, Model 3, F350
Join Date: Jan 2010
Location: South Florida & NC

iTrader: (1)

Quote:
Originally Posted by M5Rick View Post
^ Even so, it's important to being shown again (thought it looked familiar) so that EV buyers in apartments don't fall into the same trap as Miguel Frolich did. The bottom line here is to never rush into anything particularly when buying an EV before doing the homework..
The same can be said about anything. However we don't have 445 page threads about those.

Anyways to answer the original question again, yes I still want an EV, so much so I just traded in the Model 3 for the new highland Model 3. I gotta say it's better in almost every way. Can't wait to see what the new Y is going to be like.

High probability I will be trading in the Cayenne for another EV in the next few months. Might venture outside of Tesla and try something else or might not.
Appreciate 1
gblansten2516.00
Post Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 11:08 PM.




m5:
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST